Conceptronic C4USB2CUBEG, USB 2.0, 480 Mbit/s, Black, Windows XP, Vista, 7 Mac OS X 10.5+, 1.26" (32 mm), 1.22" (31 mm) Conceptronic C4USB2CUBEG. Hub interfaces: USB 2.0. Data transfer rate: 480 Mbit/s, Product color: Black. Compatible operating systems: Windows XP, Vista, 7 Mac OS X 10.5+. Width: 1.26" (32 mm), Depth: 1.22" (31 mm), Height: 1.22" (31 mm)